Question

what are four R's?explain how they help to conserve the environment

Answer 1

Four R's means reduce, recycle, refuse, reuse
Reduce pollution, recycle non biodegradable substance, refuse to use the plastic, reuse the used paper plastic etc

Answer 2

The four R's are the reduce, reuse, recover and recycle. They help to conserve environment by the following ways:
1) Reduce - In this we just have to reduce the use of resources, for example we can use one bucket of water for bath instead of shower.
2)Reuse - In this we just have to reuse the things for example we can use a polytene bag two or more times.
3)Recycle - In this the things are recycled for making a new things after some processing.
4)Recover - The alternative material should be used instead of non renewable things.